Message Received

ID of the event. It is the same on every retry and redelivery of the event and on every webhook or WebSocket subscription that receives it, so use it to deduplicate. The format varies by event type; treat it as an opaque string.

The received message. The body (text, html, extracted_text, and extracted_html) is included inline only when it is small enough. Webhooks omit it when the stored body is larger than 64 KiB; WebSocket events also omit it when the serialized event would be larger than 30 KiB. When the body is omitted, body_url and body_expires_at are set instead.